Abstract
Studies on synergistic effects of different chemicals on nuclear polyhedrosis (grasserie disease) of silkworm, Bombyx mori Linnaeus
Highlights
Larvae of multivoltine breed silk worm Bombyx mori L. (Nistari) was studied in both favorable and unfavorable rearing seasons after Grasserie disease caused by Bombyx mori Nuclearpolyherosis Virus (BmNPV) using various disinfectants
Under the influence of pathogen, the host metabolism being diverted from pyruvate to oxaloacetate oriented reactions might have something to do with replenishment of hosts’ glycogen reserve and the host metabolism is geared towards meeting the requirements of the growing pathogens (Sharan et al, 1998)
It may be stated that besides temperature, relative humidity is an important environmental factor affecting on growth and development of mulberry silkworm during infection, and silkworm can tolerate minor variation of temperature as prevailed in season1 but small variation of relative humidity disfavors the development of silkworm and favors the multiplication of pathogens as prevailed in season-2 (Chakrabarty and Manna, 2008)
Summary
Larvae of multivoltine breed silk worm Bombyx mori L. (Nistari) was studied in both favorable and unfavorable rearing seasons after Grasserie disease caused by Bombyx mori Nuclearpolyherosis Virus (BmNPV) using various disinfectants. (Nistari) was studied in both favorable and unfavorable rearing seasons after Grasserie disease caused by Bombyx mori Nuclearpolyherosis Virus (BmNPV) using various disinfectants. In short the fundamental basis of silkworm disease management is the implementation of the policy of prevention first Under this policy disinfection to eliminate risk of disease transmission and increasing the vigor of the silkworm to enhance the resistance to diseases are given due weightage. A pertinent question often arises in every sericulturist that if the parent generation suffers from BmNPV infection, would the offspring carry the same through transovarial transmission or not. In this context disinfection plays a vital role in sericulture during rearing of silkworm. The important prophylactic measures followed are disinfection of rearing house and the rearing appliances in addition to incubation care, feeding the larvae only with good quality mulberry leaves, management of young and late age to raise robust stock to increase their vigor and level of disease resistance (Noamani et al, 1989)
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